Lance and Mario were working in the snack bar at the Turbulent Tunas
Concert. They sold hot dogs for $1.65, hamburgers for $2.35, sodas
for $.85, and the combo plate with fries, salad, a hamburger; and
soda for $3.89. They sold 80 items in an hour for $163.24. How many
of each kind of food did they sell, and how much did they make on
each kind of food?

Fred and Wilma's house had a 40 x 72 ft rectangular yard. Wilma
cultivated 5/12 of the area in flowers, which she grew in an
even border around the central grass area. Every morning Fred walked
Dino around the central grass area inside the flowers. How many laps
did he have to do to walk at least 1/4 mile?

In an Arithmetic Progression, whose first term and common difference are
both non-zero, U(n) denotes the nth term and S(n) denotes the sum of n
terms. If U(6), U(4), U(10) form a Geometric Progression show that S(10)
= 0, show that S(6) + S(12) = 0, and deduce that U(7) + U(8) + U(9) +
U(10) = U(11) + U(12).